TL;DR — Quick Summary

Fix Aspel NOI IMSS disability registration errors: correct folio, dates, NSS, risk type, subsidized days and SDI before exporting movements to SUA.

IMSS disability registration diagram for Aspel NOI

When Aspel NOI fails to register IMSS disability leaves — or registers them but errors on payroll calculation or SUA export — HR teams are caught between the institute’s certificate and a system that demands exact data: folio, dates, risk type, subsidized days and consistency with the worker’s SDI.

This guide covers common error messages, technical and data-entry causes in Mexico, and the procedure to register disabilities without rejections at payroll close or SUA export.

The Error

When capturing a disability in Catalog > Workers > Disabilities or processing payroll with temporary leave, NOI may show:

“Disability folio already exists”

“Disability dates are outside the payroll period”

“Worker has no active hire on the indicated date”

“Subsidized days exceed the allowed maximum”

“Error calculating disability subsidy”

“Invalid NSS for affiliation movement”

In other cases NOI accepts the entry but SUA export shows rejections related to leave dates or SDI inconsistent with the registered disability.

Root Causes

Disability registration in NOI is not a simple absence calendar. The system must link the leave to the affiliation movement IMSS expects in SUA/IDSE, calculate subsidy by risk type and apply payroll rules for non-covered days.

Duplicate or mis-captured disability folio

Each IMSS disability has a unique folio. If already registered for another worker or period, NOI rejects it. Capture errors — missing digits, confusing folio with case number — cause reconciliation gaps.

Verify the folio on the IMSS disability certificate before entering data.

Dates outside payroll period or inconsistent

Start date must match the first day on the IMSS certificate. End date cannot precede start or exceed authorization. Registering in a closed payroll period or with dates outside the active bimestre blocks the movement.

Worker without active hire or wrong NSS

NOI validates active affiliation on disability start date. Wrong NSS, termination before disability start, or hire after start date causes errors.

Location: Catalog > Workers > IMSS Data > NSS.

Wrong risk type selected

IMSS classifies disabilities as:

CodeTypeTypical subsidy
RTWork risk100% from day 1
EGGeneral illness60% days 4–90
MMaternity100% per regulations

Selecting a type different from the IMSS certificate creates subsidy mismatches.

Incorrect subsidized days

Subsidized days are those IMSS pays directly. NOI validates they don’t exceed total disability days or legal maximums by risk type.

Outdated SDI

Disability subsidy is calculated on Integrated Daily Salary. Without Processes > Recalculate SDI after a recent raise, NOI subsidy won’t match IMSS.

Step-by-Step Fix

1. Review IMSS certificate and folio

  1. Obtain the disability certificate (physical or digital).
  2. Note folio, NSS, start/end dates, risk type and authorized days.
  3. Confirm folio isn’t already in NOI: Reports > Disabilities by period.

2. Validate worker data

In Catalog > Workers:

  • NSS: 11 digits with valid check digit.
  • Status: active on disability start date.
  • SDI: run Processes > Recalculate SDI after recent salary changes.

3. Capture disability in NOI

  1. Select worker → Movements > Disabilities.
  2. Enter exact IMSS folio.
  3. Set start and end dates per certificate.
  4. Select risk type (RT, EG, M).
  5. Register subsidized days per IMSS authorization.
  6. Save and confirm no warnings.

4. Process payroll for the period

  1. Run Processes > Calculate payroll for the affected period.
  2. Review payslip: IMSS subsidy, non-covered days and deductions.
  3. Compare with IMSS certificate or payment notice.
  4. If amounts differ, verify SDI and risk type before closing.

5. Export to SUA and reconcile

  1. Processes > IMSS > Export movements to SUA — include disability period.
  2. Import in SUA and confirm Accepted status.
  3. Verify leave dates don’t cause bimonthly calculation rejections.

Prevention

  • Register disabilities the same day you receive the IMSS certificate.
  • Use a checklist: folio, NSS, dates, risk type, subsidized days, recalculated SDI.
  • Train staff on the difference between disability, justified absence and vacation.
  • Back up NOI database before periods with multiple disabilities.

Summary

  • NOI disability errors usually stem from duplicate folio, wrong dates, invalid NSS, wrong risk type or outdated SDI.
  • Validate the IMSS certificate before capture and recalculate SDI after salary changes.
  • Process payroll and reconcile subsidy before closing the period.
  • Export to SUA and confirm Accepted status in the affected bimestre.